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irf9520 circuits and projects

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This MOSFET amplifier uses two complementary MOSFETs (IRF9520 and IRF520) to deliver up to 20W into 8 Ω speaker. A TL071 op amp is used as an input amplifier. The MOSFETs should be heatsinked with a heatsink of better than 50C/W capability. THD is less than 0.15% from 100Hz to 10KHz. continue reading…